通信电缆受高速铁路接触网电磁感应影响的分析研究

Research and Analysis of Electromagnetic Induction Effect on Communication Cables Caused by the High-speed Railway Overhead Line System

高速电力机车在运行时,接触网周围将会产生电磁场,该电磁场通过容性耦合和感性耦合对临近用于机车通信的电缆产生感应电压和电流,此电压和电流会影响机车的安全运行和人员安全.本文对容性耦合和感性耦合的产生机理及影响进行了详细分析,列出了相关计算公式和影响限值,并且对相应的影响提出了针对性的电磁防护措施.

When high - speed electric locomotives are running, the overhead line system will generate electromagnet- ic fields around it. The electromagnetic field will generate induced voltage and current through capacitive coupling and inductive coupling on locomotive communication cables. This voltage and current will affect the safe operation of the locomotive and the safety of personnel. In this paper, we have a detailed analysis on the mechanism and the im- pact of capacitive coupling and inductive coupling. And list the calculation formulas and effect limits. At last, we give the corresponding electromagnetic protection measures according to the analysis result of the calculations. We proposed targeted electromagnetic protection measures to the corresponding impacts.